diff mbox series

[PULL,2/9] usb-host: skip reset for untouched devices

Message ID 20190529062832.26483-3-kraxel@redhat.com
State New
Headers show
Series [PULL,1/9] usb: call reset handler before updating state | expand

Commit Message

Gerd Hoffmann May 29, 2019, 6:28 a.m. UTC 
If the guest didn't talk to the device yet, skip the reset.
Without this usb-host devices get resetted a number of times
at boot time for no good reason.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 20190522094702.17619-3-kraxel@redhat.com
---
 hw/usb/host-libusb.c | 3 +++
 1 file changed, 3 insertions(+)
diff mbox series

Patch

diff --git a/hw/usb/host-libusb.c b/hw/usb/host-libusb.c
index 67b7465915f5..4e9a45a5d26f 100644
--- a/hw/usb/host-libusb.c
+++ b/hw/usb/host-libusb.c
@@ -1459,6 +1459,9 @@  static void usb_host_handle_reset(USBDevice *udev)
     if (!s->allow_guest_reset) {
         return;
     }
+    if (udev->addr == 0) {
+        return;
+    }
 
     trace_usb_host_reset(s->bus_num, s->addr);